Identify the exact event, not just its name
Start with the player's age group and the period when the family can travel. Use the TTP catalogue to compare dates, countries, cities, surfaces and categories, then open the official information for the events you are considering.
Make sure the source refers to the right edition. A tournament may use the same name each year, while its dates, venue or arrangements change. Also check whether the page describes the age group and competition you intend to enter rather than another event at the same club.
Ask the coach whether the category, surface and likely level suit the player's preparation. These are reasons to choose one event over another, not predictions of an easy draw or guaranteed results. If you are changing surfaces, include the preparation that the coach considers appropriate rather than assuming that adjacent tournament weeks automatically fit together.